Application of rational power functions in analyses of saccadic velocity profiles

Kuo Hsien Huang, Yung Fu Chen, Hsuan Hung Lin, Tainsong Chen

研究成果: Conference contribution

摘要

The relationship between the product of peak velocity and duration (V mD) and saccadic amplitude is tightly correlated. The velocity profile of a saccade was referred as a triangular profile; whereas the saccadic amplitude is proportional to VmD. From our observation and derivation, in addition to the triangular profile, the rational power function can also be applied to explain the linear relationship between the saccadic amplitude and VmD. In this study, rational power functions were used for the analyses of saccadic dynamics. The results show that the rational power functions were fitted very well to the velocity profiles for three different amplitudes, i.e. 10°, 20°, and 30°, with correlation coefficients are all greater than 0.99. Significant differences in shape parameters between experimental and simulated profiles were also observed. Additionally, we have found that the minimum variance model proposed based on the minimization of variance of post-saccadic eye position cannot simulate velocity profiles matched with the experimental results. In conclusion, rational power functions are efficient in describing the saccadic velocity profiles. The shape parameters are also efficient for describing the dynamics of saccadic velocity profiles.

原文English
主出版物標題Proceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
頁面4549-4552
頁數4
出版狀態Published - 2005 十二月 1
事件2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005 - Shanghai, China
持續時間: 2005 九月 12005 九月 4

出版系列

名字Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
7 VOLS
ISSN(列印)0589-1019

Other

Other2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
國家/地區China
城市Shanghai
期間05-09-0105-09-04

All Science Journal Classification (ASJC) codes

  • 訊號處理
  • 生物醫學工程
  • 電腦視覺和模式識別
  • 健康資訊學

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